Top 100 Software Testing Companies in California

PFLB specializes in performance testing services. We help companies find and resolve performance bottlenecks such as ill-performing API calls or slow database queries.

Clients choose us for their performance testing needs across various technologies, including web and mobile applications, core banking systems, SAP, IVR, and legacy software.

We provide support for JMeter and LoadRunner environments, offering a comprehensive range of solutions. Additionally, our load testing platform, PFLB, empowers companies to conduct efficient and scalable performance tests.

With over 15 years of industry experience, PFLB has established a strong reputation for delivering reliable performance testing solutions globally.

For more information, visit our website at pflb.us. We'd love to discuss how we can optimize your software's performance.

Amplitude Digital Inc. is a digital marketing agency headquartered in Los Angeles. The company specializes in PPC and SEO, and additionally provides digital marketing and social media marketing services. Their small team of 9 works with mid-market and enterprise businesses in mainly the health care & medical, media, and retail industries. 
 

SP Marketplace is a software development company based in Penn Valley, Calif., with another office in Sacramento, Calif. Founded in 2012, SP Marketplace specializes in providing custom software development, application development, and application management services to IT companies and nonprofits.

Established in 2017, ShyftUp is a mobile & app marketing company. The small team specializes in mobile & app marketing. The firm is based in San Francisco, California.

A digital marketing agency based in San Diego, Wolfhound Interactive was founded in 2003. Their team of fewer than 10 offers conversion optimization, PPC, UX/UI design, and digital strategy services. They serve small to midmarket businesses in industries such as e-commerce, advertising and marketing, and business services.

Quality geek is a Santa Monica, California-based user experience company. The small agency was launched in 2021. Their services include ux/ui design, web development, application testing, and e-commerce development.

Prestige Development Group is an IT staff augmentation company based in Sacramento, California. The small firm was launched in 2016. Their team specializes in IT staff augmentation, custom software development, mobile app development, and blockchain.

Calibraint Technologies is a Chennai, India-based blockchain company. The midsize team focuses on blockchain, custom software development, Artificial Intelligence, application management & support, and more and was launched in 2015.

4 Way Technologies is an application development company. They offer mobile app development and were founded in 2012. Their midsize team is in Noida, India and Fremont, California.

VOLANSYS Technologies is a product realization and digital transformation company based in Ahmedabad, India, and founded in 2008. Their team of more than 350 employees specializes in IoT development, cloud consulting, and mobile app development. 

Opel Labs is an application testing company. In San Diego, California, their small team specializes in application testing, IoT development, Artificial Intelligence, and custom software development. The agency was launched in 2020.

Worklab.io, Inc. is a software agency founded in 2011 with no more than 10 members. They offer custom software, web, and mobile app development solutions from their office in Burbank, Calif. They work with small and mid-market firms in the field of business services.

Laminar Consulting Services Inc. is an application development firm located in Foothill Ranch, Calif. Founded in 20015, they currently have about 3 employees. They offer custom software development, application testing, and enterprise app modernization services to primarily midmarket firms in financial services as well as the health care and medical industries.

Agile Soft Systems, Inc, a custom software development firm, was launched in 2012. Their midsize team is headquartered in Fremont, California. Their services include custom software development, application testing, blockchain, enterprise app modernization, and more.

WordSphere WordPress Development Agency is a software development firm established in 2007. Their small team is headquartered in San Bernardino, California. The company focuses on custom software development, IT managed services, web design, wearable app development, and more.

Position1.com is a small digital marketing firm headquartered in Laguna Beach, Calif. Founded in 2017, their main focus lines are PPC, SEO, and web design.

Thought Frameworks is an application testing company. They are in Walnut, California and Bengaluru, India and have a midsize team that provides application testing. The company was founded in 2009.

QA Genesis is an application testing company headquartered in Ellicott City, Maryland. They focus on application testing and were founded in 2014.

PCloudy is a midsize Dublin, California-based application testing company. They focus on application testing and were launched in 2015.

Application testing company Innoflexion Technologies was founded in 2016. The company offers application testing and has a midsize team.

Parasoft is a midsize application testing company. They focus on application testing and were founded in 1987. The agency is headquartered in Monrovia, California; Shanghai, China and Kraków, Poland.

Test IO is a large application testing company. They offer application testing and were founded in 2011.

In San Jose, California, Performance Lab is an application testing company. The agency specializes in application testing and is midsize.The agency was launched in 2008.

Sauce Labs is an application testing company. Headquartered in San Francisco, California; Berlin, Germany and Warsaw, Poland, their midsize team provides application testing. The firm was launched in 2008.

Spiral QA is an application testing company established in 2011. The firm offers application testing and has a small team. The firm is headquartered in San Francisco, California.

BlazeRunner is an application testing company. They specialize in application testing and were launched in 2019. The agency is located in Palo Alto, California and Minneapolis, Minnesota.

HeadSpin is a midsize application testing company. Founded in 2015, the firm is headquartered in Sunnyvale, California. Their team provides application testing.

Application testing company FutureDial, Incorporated was founded in 1999. Their midsize team is located in Sunnyvale, California and specializes in application testing.

DIGITAL Hearts USA Inc. Is an application testing company established in 2011. Their small team is located in Torrance, California. The agency offers application testing.

Launched in 2010, 3Qi Labs is an application testing company. Based in Santa Clara, California, their small team provides application testing.